212021123330 has 16 divisors (see below), whose sum is σ = 398230979904. Its totient is φ = 81121125360.

The previous prime is 212021123323. The next prime is 212021123339. The reversal of 212021123330 is 33321120212.

It is not an unprimeable number, because it can be changed into a prime (212021123339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460915256 + ... + 460915715.

It is an arithmetic number, because the mean of its divisors is an integer number (24889436244).

Almost surely, 2^212021123330 is an apocalyptic number.

212021123330 is a deficient number, since it is larger than the sum of its proper divisors (186209856574).

212021123330 is a wasteful number, since it uses less digits than its factorization.

212021123330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921831001.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 212021123330 its reverse (33321120212), we get a palindrome (245342243542).

The spelling of 212021123330 in words is "two hundred twelve billion, twenty-one million, one hundred twenty-three thousand, three hundred thirty".